Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations provide readOnlyHint=true, idempotentHint=true, and destructiveHint=false, which already cover the safety profile. The description adds the specific scope (MCP platform and adapter versions) beyond generic annotations. No contradiction with annotations. It could add more about the format or detail of the version output, but for a simple read-only query, the existing annotations and description are sufficient.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, clear sentence with no wasted words. It's perfectly sized for a simple no-parameter version tool. The structure is ideal - purpose is front-loaded and immediately understandable.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (0 params, no output schema, read-only annotations), the description is nearly complete. It clearly states what it shows. It could mention return format or any side effects, but with readOnlyHint and no parameters, there's little room for additional behavioral requirements. It's complete for its scope.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has zero parameters, so the schema provides no parameter constraints. The description correctly notes the purpose but doesn't need to explain parameters. Baseline for 0 params is 4, and the description doesn't harm that. It could mention that no arguments are required, but the empty schema already communicates this.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Show the current MCP platform and adapter versions.' It uses a specific verb ('Show') and resource ('MCP platform and adapter versions'), which distinguishes it from siblings like authenticate or marketplace. It loses a point because it doesn't explicitly differentiate from potentially similar version-related tools like toolkit_info, but the scope is clear enough.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage (when you need version info) but doesn't provide explicit when/when-not guidance or mention alternatives. It's a simple, obvious tool, so the lack of explicit guidance is acceptable, but there's no discussion of when to use this versus toolkit_info or other information tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.